3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1]; $a[] = &$a[out(count($a) - 1)]; var_dump($a); function out($what) { var_dump($what); return $what; }

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0100.01018.43
8.3.50.0120.00318.32
8.3.40.0070.01118.81
8.3.30.0070.00718.73
8.3.20.0000.00720.04
8.3.10.0040.00420.39
8.3.00.0060.00320.27
8.2.180.0090.00625.92
8.2.170.0070.00718.91
8.2.160.0160.00022.96
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0080.00018.76
8.2.120.0080.00026.35
8.2.110.0060.00320.92
8.2.100.0040.00817.91
8.2.90.0000.00819.08
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0040.00417.80
8.2.50.0000.00818.09
8.2.40.0000.00820.63
8.2.30.0040.00419.56
8.2.20.0020.00517.74
8.2.10.0000.00718.02
8.2.00.0040.00417.98
8.1.270.0040.00423.84
8.1.260.0080.00028.09
8.1.250.0030.00628.09
8.1.240.0140.00017.46
8.1.230.0040.00717.89
8.1.220.0050.00317.75
8.1.210.0000.00918.77
8.1.200.0070.00417.35
8.1.190.0000.00919.01
8.1.180.0050.00318.10
8.1.170.0090.00018.43
8.1.160.0070.00020.88
8.1.150.0040.00418.79
8.1.140.0040.00417.40
8.1.130.0000.00817.68
8.1.120.0070.00017.35
8.1.110.0070.00017.43
8.1.100.0000.00717.44
8.1.90.0000.00817.41
8.1.80.0050.00217.45
8.1.70.0070.00017.47
8.1.60.0040.00417.61
8.1.50.0040.00417.54
8.1.40.0080.00317.51
8.1.30.0040.00417.54
8.1.20.0030.00517.56
8.1.10.0030.00617.39
8.1.00.0040.00417.41
8.0.300.0080.00018.77
8.0.290.0000.00716.63
8.0.280.0000.00818.32
8.0.270.0000.00716.75
8.0.260.0060.00017.12
8.0.250.0050.00216.79
8.0.240.0070.00016.91
8.0.230.0070.00016.76
8.0.220.0070.00016.83
8.0.210.0000.00716.82
8.0.200.0050.00316.92
8.0.190.0040.00416.92
8.0.180.0000.00816.85
8.0.170.0000.00816.88
8.0.160.0000.00816.90
8.0.150.0000.00916.91
8.0.140.0030.00616.66
8.0.130.0030.00313.25
8.0.120.0040.00416.93
8.0.110.0000.00716.79
8.0.100.0000.00716.75
8.0.90.0040.00416.95
8.0.80.0090.00616.86
8.0.70.0040.00416.68
8.0.60.0030.00416.95
8.0.50.0070.00017.00
8.0.30.0060.01117.22
8.0.20.0120.00817.40
8.0.10.0040.00416.83
8.0.00.0110.00916.79
7.4.330.0000.00516.89
7.4.320.0030.00316.61
7.4.300.0030.00316.61
7.4.290.0000.00716.51
7.4.280.0000.00816.48
7.4.270.0070.00016.55
7.4.260.0080.00016.45
7.4.250.0070.00016.55
7.4.240.0030.00516.49
7.4.230.0030.00316.69
7.4.220.0100.01016.50
7.4.210.0040.00916.62
7.4.200.0070.00016.43
7.4.160.0060.00916.43
7.4.150.0110.00717.40
7.4.140.0100.01317.86
7.4.130.0110.00616.48
7.4.120.0110.00816.51
7.4.110.0130.00716.51
7.4.100.0130.00416.29
7.4.90.0120.00616.48
7.4.80.0100.01019.39
7.4.70.0090.00916.48
7.4.60.0140.00316.49
7.4.50.0030.01016.53
7.4.40.0100.00716.57
7.4.30.0150.00616.27
7.4.00.0050.00514.63
7.3.330.0000.00613.29
7.3.320.0030.00313.19
7.3.310.0000.00716.18
7.3.300.0000.00716.21
7.3.290.0070.00016.23
7.3.280.0160.00616.34
7.3.270.0090.00917.40
7.3.260.0190.00316.64
7.3.250.0100.00816.44
7.3.240.0080.01016.36
7.3.230.0090.00616.50
7.3.210.0170.00016.31
7.3.200.0130.00316.36
7.3.190.0080.00916.39
7.3.180.0080.01116.22
7.3.170.0100.00716.21
7.3.160.0000.01616.45
7.3.10.0080.00316.66
7.3.00.0030.00716.73
7.2.330.0060.01216.44
7.2.320.0030.01516.48
7.2.310.0130.00316.57
7.2.300.0210.00316.49
7.2.290.0110.00516.87
7.2.130.0040.00817.08
7.2.120.0070.00416.77
7.2.110.0060.00617.05
7.2.100.0040.00716.75
7.2.90.0000.01117.08
7.2.80.0080.00416.96
7.2.70.0000.01217.13
7.2.60.0110.00416.95
7.2.50.0000.01116.63
7.2.40.0100.00216.86
7.2.30.0060.00616.83
7.2.20.0060.00616.87
7.2.10.0040.00716.72
7.2.00.0070.00618.23
7.1.250.0070.00315.84
7.1.200.0030.00915.60
7.1.100.0040.01118.11
7.1.70.0070.00017.28
7.1.60.0170.00719.77
7.1.50.0110.01116.94
7.1.00.0070.07322.57
7.0.200.0060.00316.57
7.0.100.0030.08319.94
7.0.90.0030.07319.93
7.0.80.0030.06319.98
7.0.70.0070.08019.87
7.0.60.0100.04720.00
7.0.50.0570.06020.36
7.0.40.0070.08020.04
7.0.30.0100.08020.11
7.0.20.0070.09020.02
7.0.10.0100.08019.98
7.0.00.0200.07720.09
5.6.280.0030.07320.82
5.6.250.0200.07020.61
5.6.240.0100.08020.61
5.6.230.0130.07720.64
5.6.220.0030.05320.65
5.6.210.0170.07720.46
5.6.200.0070.09021.01
5.6.190.0130.07721.04
5.6.180.0100.08721.08
5.6.170.0100.08021.11
5.6.160.0100.07321.06
5.6.150.0100.06721.03
5.6.140.0030.08321.02
5.6.130.0130.07721.11
5.6.120.0100.08021.05
5.6.110.0070.05321.06
5.6.100.0030.06320.93
5.6.90.0000.09320.95
5.6.80.0070.07720.49
5.6.70.0100.06020.39
5.6.60.0030.07720.45
5.6.50.0100.07720.32
5.6.40.0130.07720.46
5.6.30.0100.07320.35
5.6.20.0100.06020.46
5.6.10.0030.07720.29
5.6.00.0000.05720.30
5.5.380.0170.07020.40
5.5.370.0070.08320.35
5.5.360.0170.05720.42
5.5.350.0200.07320.37
5.5.340.0000.09020.87
5.5.330.0030.06720.74
5.5.320.0100.08020.84
5.5.310.0100.05720.91
5.5.300.0000.08320.88
5.5.290.0030.08020.87
5.5.280.0070.08320.87
5.5.270.0100.08020.79
5.5.260.0170.07320.83
5.5.250.0100.07720.61
5.5.240.0100.07720.00
5.5.230.0070.08020.21
5.5.220.0070.07320.18
5.5.210.0170.03720.16
5.5.200.0030.06720.17
5.5.190.0130.07020.11
5.5.180.0030.08020.22
5.5.160.0100.08320.24
5.5.150.0070.08020.08
5.5.140.0130.07320.08
5.5.130.0100.08020.23
5.5.120.0170.05720.16
5.5.110.0100.04020.22
5.5.100.0100.08319.98
5.5.90.0070.04720.01
5.5.80.0100.07020.11
5.5.70.0100.08320.16
5.5.60.0070.08020.15
5.5.50.0130.06720.16
5.5.40.0170.07020.09
5.5.30.0000.07720.14
5.5.20.0070.08020.12
5.5.10.0070.08020.11
5.5.00.0100.07019.98

preferences:
64.77 ms | 400 KiB | 5 Q